Ice Gopher. Anthony Powell.
Sink holes in the ice shelf re-freeze over winter, and when the ice expands as it freezes it causes these mini-volcano shapes to appear. Ice expands at roughly a 9:1 ratio when it freezes, so there was roughly 9 times the volume of this wee eruption in liquid water hidden just below the surface of the ice a few weeks before.

Due to an unusually warm winter, the floating ice pier that is normally used to offload cargo melted badly during the summer, making it unusable. A temporary floating pier had to be installed.
Filmed with 4 Canon DSLRs, and a GoPro.
Over 150,000 photos were condensed down to make this video.
For further info about the background events read here...
antarcticsun.usap.gov/features/contenthandler.cfm?id=2608